here is a 2 bit counter... its not the most optimized way but its in theory 2jk fliplops daisy chained.. in this one, i didnt group any elements together, just used the basic original (AND and NOT) also the clock is built in that can be found in the library
of course, we can improve on it, group it up and make it 4 bit
peaking through the 4b counter block you see
Peaking through a JK-FF you see 
inside of an SR latch 
and inside a NOR